If neuron X causes hyperpolarization of neuron Z but neuron Y causes depolarization of neuron Z, what change would you expect in neuron Z if it is stimulated by both X and Y simultaneously?
a. a significant increase in membrane potential
b. a significant decrease in membrane potential
c. temporal summation leading to an impulse on Z
d. simultaneous influx and efflux of cations or simultaneous influx of cations and efflux of anions
e. an increase in the resting membrane potential
D
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Which of the following leukocytes is a phagocyte?
A) neutrophils only B) basophils only C) monocytes only D) both neutrophils and basophils E) both neutrophils and monocytes
Osteoporosis increases the risk of
A. bone spurs. B. bone fractures. C. bone cancer. D. anemia.
The portion of the pharynx continuous with the mouth is termed the oropharynx
Indicate whether the statement is true or false
Target cells can become more sensitive to a hormone by increasing the number of receptors via which process?
a) lateral-regulation b) up-regulation c) down-regulation